134248021 has 8 divisors (see below), whose sum is σ = 137603840. Its totient is φ = 130902912.

The previous prime is 134248013. The next prime is 134248039. The reversal of 134248021 is 120842431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134248021 - 2³ = 134248013 is a prime.

It is a super-2 number, since 2×134248021² = 36045062284832882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134248001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26620 + ... + 31258.

It is an arithmetic number, because the mean of its divisors is an integer number (17200480).

Almost surely, 2^134248021 is an apocalyptic number.

It is an amenable number.

134248021 is a deficient number, since it is larger than the sum of its proper divisors (3355819).

134248021 is an equidigital number, since it uses as much as digits as its factorization.

134248021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5355.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 134248021 is about 11586.5448257882. The cubic root of 134248021 is about 512.0385166438.

The spelling of 134248021 in words is "one hundred thirty-four million, two hundred forty-eight thousand, twenty-one".